Electronic and vibrational excitations in layered highTc superconductors
Abstract In the series of the layered highTc superconductors (A)1,2 $ B_{2} $$ Ca_{n−1} $$ Cu_{n} $$ O_{2n+3,4} $ (A=Tl or Bi;B=Ba or Sr), withn=number of consecutive Cu-O layers, the electron energy states of some of the Tl-based systems have been investigated. The electron and phonon dispersion cu...
Ausführliche Beschreibung
Gespeichert in:
| Autor*in: |
Agrawal, Bal K [verfasserIn] |
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| Format: |
Artikel |
|---|---|
| Sprache: |
Englisch |
| Erschienen: |
1991 |
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| Schlagwörter: |
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| Anmerkung: |
© Indian Academy of Sciences 1991 |
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| Übergeordnetes Werk: |
Enthalten in: Bulletin of materials science - Springer India, 1979, 14(1991), 4 vom: Aug., Seite 967-971 |
|---|---|
| Übergeordnetes Werk: |
volume:14 ; year:1991 ; number:4 ; month:08 ; pages:967-971 |
| Links: |
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| DOI / URN: |
10.1007/BF02747460 |
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OLC2055182242 |
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| 520 | |a Abstract In the series of the layered highTc superconductors (A)1,2 $ B_{2} $$ Ca_{n−1} $$ Cu_{n} $$ O_{2n+3,4} $ (A=Tl or Bi;B=Ba or Sr), withn=number of consecutive Cu-O layers, the electron energy states of some of the Tl-based systems have been investigated. The electron and phonon dispersion curves have been obtained. The electronic states near the Fermi level are dominated by the hybridized Cu(d) and the O(p) orbitals. The dispersion curves are highly two-dimensional with very small dispersion alongc-axis. The number of bands is enhanced with increase in the number of the consecutive Cu-O planes (n). The present results agree with those obtained earlier for other superconducting phases. The phonons are overall dominated by the vibrations of the light mass oxygen atom modes both lying in or outside the Cu-O planes. The low-frequency phonons involve the motions of the heavier Tl, Ba atoms etc. | ||
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| 700 | 1 | |a Negi, J S |4 aut | |
| 700 | 1 | |a Varshney, Namrata |4 aut | |
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10.1007/BF02747460 doi (DE-627)OLC2055182242 (DE-He213)BF02747460-p DE-627 ger DE-627 rakwb eng 600 VZ Agrawal, Bal K verfasserin aut Electronic and vibrational excitations in layered highTc superconductors 1991 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier © Indian Academy of Sciences 1991 Abstract In the series of the layered highTc superconductors (A)1,2 $ B_{2} $$ Ca_{n−1} $$ Cu_{n} $$ O_{2n+3,4} $ (A=Tl or Bi;B=Ba or Sr), withn=number of consecutive Cu-O layers, the electron energy states of some of the Tl-based systems have been investigated. The electron and phonon dispersion curves have been obtained. The electronic states near the Fermi level are dominated by the hybridized Cu(d) and the O(p) orbitals. The dispersion curves are highly two-dimensional with very small dispersion alongc-axis. The number of bands is enhanced with increase in the number of the consecutive Cu-O planes (n). The present results agree with those obtained earlier for other superconducting phases. The phonons are overall dominated by the vibrations of the light mass oxygen atom modes both lying in or outside the Cu-O planes. The low-frequency phonons involve the motions of the heavier Tl, Ba atoms etc. Electronic excitation vibrational excitation Agrawal, S aut Yadav, P S aut Kumar, S aut Negi, J S aut Varshney, Namrata aut Enthalten in Bulletin of materials science Springer India, 1979 14(1991), 4 vom: Aug., Seite 967-971 (DE-627)130547476 (DE-600)781668-6 (DE-576)9130547474 0250-4707 nnns volume:14 year:1991 number:4 month:08 pages:967-971 https://doi.org/10.1007/BF02747460 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_OLC SSG-OLC-TEC GBV_ILN_11 GBV_ILN_30 GBV_ILN_70 AR 14 1991 4 08 967-971 |
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10.1007/BF02747460 doi (DE-627)OLC2055182242 (DE-He213)BF02747460-p DE-627 ger DE-627 rakwb eng 600 VZ Agrawal, Bal K verfasserin aut Electronic and vibrational excitations in layered highTc superconductors 1991 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier © Indian Academy of Sciences 1991 Abstract In the series of the layered highTc superconductors (A)1,2 $ B_{2} $$ Ca_{n−1} $$ Cu_{n} $$ O_{2n+3,4} $ (A=Tl or Bi;B=Ba or Sr), withn=number of consecutive Cu-O layers, the electron energy states of some of the Tl-based systems have been investigated. The electron and phonon dispersion curves have been obtained. The electronic states near the Fermi level are dominated by the hybridized Cu(d) and the O(p) orbitals. The dispersion curves are highly two-dimensional with very small dispersion alongc-axis. The number of bands is enhanced with increase in the number of the consecutive Cu-O planes (n). The present results agree with those obtained earlier for other superconducting phases. The phonons are overall dominated by the vibrations of the light mass oxygen atom modes both lying in or outside the Cu-O planes. The low-frequency phonons involve the motions of the heavier Tl, Ba atoms etc. Electronic excitation vibrational excitation Agrawal, S aut Yadav, P S aut Kumar, S aut Negi, J S aut Varshney, Namrata aut Enthalten in Bulletin of materials science Springer India, 1979 14(1991), 4 vom: Aug., Seite 967-971 (DE-627)130547476 (DE-600)781668-6 (DE-576)9130547474 0250-4707 nnns volume:14 year:1991 number:4 month:08 pages:967-971 https://doi.org/10.1007/BF02747460 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_OLC SSG-OLC-TEC GBV_ILN_11 GBV_ILN_30 GBV_ILN_70 AR 14 1991 4 08 967-971 |
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10.1007/BF02747460 doi (DE-627)OLC2055182242 (DE-He213)BF02747460-p DE-627 ger DE-627 rakwb eng 600 VZ Agrawal, Bal K verfasserin aut Electronic and vibrational excitations in layered highTc superconductors 1991 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier © Indian Academy of Sciences 1991 Abstract In the series of the layered highTc superconductors (A)1,2 $ B_{2} $$ Ca_{n−1} $$ Cu_{n} $$ O_{2n+3,4} $ (A=Tl or Bi;B=Ba or Sr), withn=number of consecutive Cu-O layers, the electron energy states of some of the Tl-based systems have been investigated. The electron and phonon dispersion curves have been obtained. The electronic states near the Fermi level are dominated by the hybridized Cu(d) and the O(p) orbitals. The dispersion curves are highly two-dimensional with very small dispersion alongc-axis. The number of bands is enhanced with increase in the number of the consecutive Cu-O planes (n). The present results agree with those obtained earlier for other superconducting phases. The phonons are overall dominated by the vibrations of the light mass oxygen atom modes both lying in or outside the Cu-O planes. The low-frequency phonons involve the motions of the heavier Tl, Ba atoms etc. Electronic excitation vibrational excitation Agrawal, S aut Yadav, P S aut Kumar, S aut Negi, J S aut Varshney, Namrata aut Enthalten in Bulletin of materials science Springer India, 1979 14(1991), 4 vom: Aug., Seite 967-971 (DE-627)130547476 (DE-600)781668-6 (DE-576)9130547474 0250-4707 nnns volume:14 year:1991 number:4 month:08 pages:967-971 https://doi.org/10.1007/BF02747460 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_OLC SSG-OLC-TEC GBV_ILN_11 GBV_ILN_30 GBV_ILN_70 AR 14 1991 4 08 967-971 |
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10.1007/BF02747460 doi (DE-627)OLC2055182242 (DE-He213)BF02747460-p DE-627 ger DE-627 rakwb eng 600 VZ Agrawal, Bal K verfasserin aut Electronic and vibrational excitations in layered highTc superconductors 1991 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier © Indian Academy of Sciences 1991 Abstract In the series of the layered highTc superconductors (A)1,2 $ B_{2} $$ Ca_{n−1} $$ Cu_{n} $$ O_{2n+3,4} $ (A=Tl or Bi;B=Ba or Sr), withn=number of consecutive Cu-O layers, the electron energy states of some of the Tl-based systems have been investigated. The electron and phonon dispersion curves have been obtained. The electronic states near the Fermi level are dominated by the hybridized Cu(d) and the O(p) orbitals. The dispersion curves are highly two-dimensional with very small dispersion alongc-axis. The number of bands is enhanced with increase in the number of the consecutive Cu-O planes (n). The present results agree with those obtained earlier for other superconducting phases. The phonons are overall dominated by the vibrations of the light mass oxygen atom modes both lying in or outside the Cu-O planes. The low-frequency phonons involve the motions of the heavier Tl, Ba atoms etc. Electronic excitation vibrational excitation Agrawal, S aut Yadav, P S aut Kumar, S aut Negi, J S aut Varshney, Namrata aut Enthalten in Bulletin of materials science Springer India, 1979 14(1991), 4 vom: Aug., Seite 967-971 (DE-627)130547476 (DE-600)781668-6 (DE-576)9130547474 0250-4707 nnns volume:14 year:1991 number:4 month:08 pages:967-971 https://doi.org/10.1007/BF02747460 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_OLC SSG-OLC-TEC GBV_ILN_11 GBV_ILN_30 GBV_ILN_70 AR 14 1991 4 08 967-971 |
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10.1007/BF02747460 doi (DE-627)OLC2055182242 (DE-He213)BF02747460-p DE-627 ger DE-627 rakwb eng 600 VZ Agrawal, Bal K verfasserin aut Electronic and vibrational excitations in layered highTc superconductors 1991 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier © Indian Academy of Sciences 1991 Abstract In the series of the layered highTc superconductors (A)1,2 $ B_{2} $$ Ca_{n−1} $$ Cu_{n} $$ O_{2n+3,4} $ (A=Tl or Bi;B=Ba or Sr), withn=number of consecutive Cu-O layers, the electron energy states of some of the Tl-based systems have been investigated. The electron and phonon dispersion curves have been obtained. The electronic states near the Fermi level are dominated by the hybridized Cu(d) and the O(p) orbitals. The dispersion curves are highly two-dimensional with very small dispersion alongc-axis. The number of bands is enhanced with increase in the number of the consecutive Cu-O planes (n). The present results agree with those obtained earlier for other superconducting phases. The phonons are overall dominated by the vibrations of the light mass oxygen atom modes both lying in or outside the Cu-O planes. The low-frequency phonons involve the motions of the heavier Tl, Ba atoms etc. Electronic excitation vibrational excitation Agrawal, S aut Yadav, P S aut Kumar, S aut Negi, J S aut Varshney, Namrata aut Enthalten in Bulletin of materials science Springer India, 1979 14(1991), 4 vom: Aug., Seite 967-971 (DE-627)130547476 (DE-600)781668-6 (DE-576)9130547474 0250-4707 nnns volume:14 year:1991 number:4 month:08 pages:967-971 https://doi.org/10.1007/BF02747460 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_OLC SSG-OLC-TEC GBV_ILN_11 GBV_ILN_30 GBV_ILN_70 AR 14 1991 4 08 967-971 |
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Electronic and vibrational excitations in layered highTc superconductors |
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Abstract In the series of the layered highTc superconductors (A)1,2 $ B_{2} $$ Ca_{n−1} $$ Cu_{n} $$ O_{2n+3,4} $ (A=Tl or Bi;B=Ba or Sr), withn=number of consecutive Cu-O layers, the electron energy states of some of the Tl-based systems have been investigated. The electron and phonon dispersion curves have been obtained. The electronic states near the Fermi level are dominated by the hybridized Cu(d) and the O(p) orbitals. The dispersion curves are highly two-dimensional with very small dispersion alongc-axis. The number of bands is enhanced with increase in the number of the consecutive Cu-O planes (n). The present results agree with those obtained earlier for other superconducting phases. The phonons are overall dominated by the vibrations of the light mass oxygen atom modes both lying in or outside the Cu-O planes. The low-frequency phonons involve the motions of the heavier Tl, Ba atoms etc. © Indian Academy of Sciences 1991 |
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Abstract In the series of the layered highTc superconductors (A)1,2 $ B_{2} $$ Ca_{n−1} $$ Cu_{n} $$ O_{2n+3,4} $ (A=Tl or Bi;B=Ba or Sr), withn=number of consecutive Cu-O layers, the electron energy states of some of the Tl-based systems have been investigated. The electron and phonon dispersion curves have been obtained. The electronic states near the Fermi level are dominated by the hybridized Cu(d) and the O(p) orbitals. The dispersion curves are highly two-dimensional with very small dispersion alongc-axis. The number of bands is enhanced with increase in the number of the consecutive Cu-O planes (n). The present results agree with those obtained earlier for other superconducting phases. The phonons are overall dominated by the vibrations of the light mass oxygen atom modes both lying in or outside the Cu-O planes. The low-frequency phonons involve the motions of the heavier Tl, Ba atoms etc. © Indian Academy of Sciences 1991 |
| abstract_unstemmed |
Abstract In the series of the layered highTc superconductors (A)1,2 $ B_{2} $$ Ca_{n−1} $$ Cu_{n} $$ O_{2n+3,4} $ (A=Tl or Bi;B=Ba or Sr), withn=number of consecutive Cu-O layers, the electron energy states of some of the Tl-based systems have been investigated. The electron and phonon dispersion curves have been obtained. The electronic states near the Fermi level are dominated by the hybridized Cu(d) and the O(p) orbitals. The dispersion curves are highly two-dimensional with very small dispersion alongc-axis. The number of bands is enhanced with increase in the number of the consecutive Cu-O planes (n). The present results agree with those obtained earlier for other superconducting phases. The phonons are overall dominated by the vibrations of the light mass oxygen atom modes both lying in or outside the Cu-O planes. The low-frequency phonons involve the motions of the heavier Tl, Ba atoms etc. © Indian Academy of Sciences 1991 |
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Agrawal, S Yadav, P S Kumar, S Negi, J S Varshney, Namrata |
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Agrawal, S Yadav, P S Kumar, S Negi, J S Varshney, Namrata |
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130547476 |
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| doi_str |
10.1007/BF02747460 |
| up_date |
2024-07-04T01:36:00.247Z |
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